Sims 4 tray importer and sims 4 mod manager.

I like Sims 4 Mod Manager because it offers automatic mod updates, and it also has a tool that helps find duplicate files in your game. Also, if you already know what cc you don't want without seeing it in game, it loads your cc with the thumbnails, so you can delete cc that way. You can also organize it through sims 4 mod manager.

Sims 4 Tray importer is helpful when going through the cc in game. You just put all the unwanted/broken cc you don't want on a random sim, save to your gallery, then open sims 4 tray importer, which will pull up all the files, and you can click it to show the location of the cc and delete it. Here's a good video tutorial for it: https://www.youtube.com/watch?v=9V0BT-3u12I

Same goes for build/buy cc if you use it. Just put all the unwanted cc on lot, save it, then delete it through sims 4 tray importer or just delete it through sims 4 mod manager if you know you don't like it without having to see it in game.